Why bother to trade on a popular book series and then change half the characters? What possible difference could it have made to keep the caregiver Thom, the forensic guru Mel, the police officer Ron? Why change Sachs' back story to a generic TV show drama trope? And especially the beginning - made up and completely different than the book. Deaver evidently sold out to change not just the characters but his carefully crafted portrayal of a quadriplegic. This show's version has Lincoln all but get up out of bed and dance a jig.
